Update src/app/CommandHandler.cpp

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

Author: yyzhong-g

src/app/CommandHandler.cpp

@@ -828,7 +828,7 @@ void CommandHandler::Handle::Release()
     }
 }
 
-CommandHandler::Handle::Handle(CommandHandler * handle)
+CommandHandler::Handle::Handle(CommandHandler * handler)
 {
     Init(handle);
 }